Shinwa Precision Square JIS Grade 2

£24.50 - £62.50
SKU:
SHPRSQ
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Made in Japan, this high precision square is accurate, reliable and well made.

Angle tolerance +/- (20 + ℓ / 10) μm where ℓ is the nominal length (mm)

Annealed tool steel for maximum dimensional stability (not corrosion resistant)

Manufactured in accordance with Japanese Industrial Standards (JIS) B7526 Grade 2

Precision ground measurement surfaces

Please note: Unlike BS939 the Japanese engineering standard B7526 doesn't call for a burr groove at the internal corner.

Model External Measurements (mm) Accuracy
50mm 50 x 40 x 10 Better than 7 microns (0.27 thou)
75mm 75 x 50 x 13 Better than 9.5 microns (0.37 thou)
100mm 100 x 70 x 15  Better than 12 microns (0.47 thou)
150mm 150 x 100 x 19 Better than 17 microns (0.67 thou)
200mm 200 x 130 x 22 Better than 22 microns (0.87 thou)
250mm 250 x 164 x 22 Better than 27 microns (1.06 thou)
300mm 300 x 200 x 25 Better than 32 microns (1.25 thou)